This probe box developed by Soundtooth Technology Co., Ltd. will send out a signal to search for wireless network when the users mobile phones wireless LAN is open. When the probe box finds this signal, it can quickly identify the users mobile phones MAC address, convert it into IMEI number, and then convert it into mobile phone number. Some companies put such small boxes in shopping malls, supermarkets, convenience stores, office buildings and other places. Without the knowledge of users, they collect personal information, including marriage, education, income and other data. Samoye Internet Financial Services Co., Ltd. said that in cooperation with stores, only a few hundred yuan a month. A shopping mall has 11 doors and 11 probe boxes. Last September, Samoye Golden Clothes announced its IPO prospectus in the United States. (CCTV Finance and Economics)